Microsoft 70-523 : UPG:Transition MCPD.NET Frmwrk 3.5 Web Dev to 4 Web Dev

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You use
the ADO.NET Entity Framework to model entities. You write the following code segment. (Line numbers
are included for reference only.)
01AdventureWorksEntities context = New AdventureWorksEntities (http://localhost:1234/AdventureWorks.
svc );
02
03var q = from c in context.Customers
04where c.City == "London"
05orderby c.CompanyName
06select c;
You need to ensure that the application meets the following requirements: "Compares the current values of
unmodified properties with values returned from the data source. "Marks the property as modified when the
properties are not the same. Which code segment should you insert at line 02?

• A. context.MergeOption = MergeOption.AppendOnly;
• B. context.MergeOption = MergeOption.PreserveChanges;
• C. context.MergeOption = MergeOption.NoTracking;
• D. context.MergeOption = MergeOption.OverwriteChanges;

You are troubleshooting an ASP.NET Web application. System administrators have recently expanded your
web farm from one to two servers. Users are periodically reporting an error message about invalid view
state.
You need to fix the problem.
What should you do?

• A. Override the SavePageStateToPersistenceMedium and LoadPageStateFromPersistenceMedium methods in the page base class to serialize the view state to a local web server file.
• B. Set the machineKey in machine.config to the same value on both servers.
• C. Change the session state mode to SQL Server on both servers and ensure both servers use the same connection string.
• D. Set viewStateEncryptionMode to Auto in web.config on both servers.

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Communication Foundation (WCF) Data Services service. The service connects to a Microsoft SQL Server 2008 database. The service is hosted by an Internet Information Services (IIS) 6.0 Web server.
The application works correctly in the development environment. However, when you connect to the service on the production server, attempting to update or delete an entity results in an error. You need to ensure that you can update and delete entities on the production server. What should you do?

• A. Configure IIS to allow the PUT and DELETE verbs for the .svc Application Extension.
• B. Configure IIS to allow the POST and DELETE verbs for the .svc Application Extension.
• C. Add the following line of code to the InitializeService method of the service. config.SetEntitySetAccessRule ("*",EntitySetRights.WriteDelete | EntitySetRights.WriteInsert);
• D. Add the following line of code to the InitializeService method of the service. config.SetEntitySetAccessRule ("*",EntitySetRights.WriteDelete | EntitySetRights.WriteMerge);

A WCF service code is implemented as follows. (Line numbers are included for reference only.)
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01 <ServiceContract()>
02 <ServiceBehavior(
03InstanceContextMode:=InstanceContextMode.Single)>
04Public Class CalculatorService
05
06 <OperationContract()>
07Public Function Calculate(ByVal op1 As Double,
08ByVal op As String, ByVal op2 As Double) As Double
...
24End Function
25
26End Class
You need to increase the rate by which clients get the required response from the service.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution.
Choose two.)

• A. Change the service behavior to the following. <ServiceBehavior( InstanceContextMode:=InstanceContextMode.Single, ConcurrencyMode:=ConcurrencyMode.Multiple)>
• B. Change the service behavior to the following. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerCall)>
• C. Require the clients to use async operations when calling the service.
• D. Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in parallel.

You are designing an ASP.NET 4 Web application that will integrate third-party components.
You need to minimize the security risks of using these components.
Which approach should you recommend?

• A. Use the third-party components on a separate server.
• B. Use an appropriately permitted AppDomain for each component.
• C. Apply role-based security with declarative checks.
• D. Store the components in the global assembly cache.